<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>web</title>
</head>
<body>
<xmp>
    var http=require('http');
    var url=require('url');
    var fs=require('fs');
    http.createServer(function (req,response) {
    // 解析请求，包括文件名
    var pathname = url.parse(req.url).pathname;
    // 输出请求的文件名
    console.log("Request for " + pathname + " received.");
    // 从文件系统中读取请求的文件内容
    fs.readFile(pathname.substr(1), function (err, data) {
    if (err) {
    console.log(err);
    // HTTP 状态码: 404 : NOT FOUND
    // Content Type: text/plain
    response.writeHead(404, {'Content-Type': 'text/html'});
    }else{
    // HTTP 状态码: 200 : OK
    // Content Type: text/plain
    response.writeHead(200, {'Content-Type': 'text/html'});
    // 响应文件内容
    response.write(data.toString());
    }
    //  发送响应数据
    response.end();
    });
    }).listen(3000);
</xmp>
</body>
</html>